/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dx.rop.cst;

import com.android.dx.rop.type.Type;
import com.android.dx.util.Hex;

/**
 * Constants of type {@code CONSTANT_Long_info}.
 */
public final class CstLong extends CstLiteral64 {

	/** {@code non-null;} instance representing {@code 0} */
	public static final CstLong VALUE_0 = make(0);

	/** {@code non-null;} instance representing {@code 1} */
	public static final CstLong VALUE_1 = make(1);

	/**
	 * Makes an instance for the given value. This may (but does not
	 * necessarily) return an already-allocated instance.
	 * 
	 * @param value
	 *            the {@code long} value
	 */
	public static CstLong make(long value) {
		/*
		 * Note: Javadoc notwithstanding, this implementation always allocates.
		 */
		return new CstLong(value);
	}

	/**
	 * Constructs an instance. This constructor is private; use {@link #make}.
	 * 
	 * @param value
	 *            the {@code long} value
	 */
	private CstLong(long value) {
		super(value);
	}

	/** {@inheritDoc} */
	@Override
	public String toString() {
		long value = getLongBits();
		return "long{0x" + Hex.u8(value) + " / " + value + '}';
	}

	/** {@inheritDoc} */
	public Type getType() {
		return Type.LONG;
	}

	/** {@inheritDoc} */
	@Override
	public String typeName() {
		return "long";
	}

	/** {@inheritDoc} */
	public String toHuman() {
		return Long.toString(getLongBits());
	}

	/**
	 * Gets the {@code long} value.
	 * 
	 * @return the value
	 */
	public long getValue() {
		return getLongBits();
	}
}
